C 4, SB 740-97-38
Classification
Item
Defect
Major
Minor
A
B
Stage II corrosion
Cooling system:
Radiator.
Stage IV corrosion on internal surfaces; leaks....................................................
x
Stage III corrosion on internal surfaces; coolant contaminated ...........................x
Stage II corrosion on internal surfaces................................................................
x
Fan
Blades broken; stage IV corrosion ......................................................................
x
Bent; stage III corrosion ......................................................................................x
Stage II corrosion................................................................................................
x
Cooling fins
Bent or otherwise damaged to the extent repair i ................................................
x
required ........................................................................................................
x
Seals and gaskets
Deteriorated; leaks or seeps ...............................................................................x
Hoses and belts
Checking or cracking; frayed or cut; loss of
flexibility; fungus growth; broken reinforcing .................................................
x
Cracked; broken; stage IV corrosion...................................................................x
Stage III corrosion...............................................................................................
x
Stage II corrosion................................................................................................
x
W ater pump
Stage IV corrosion on internal surfaces; frozen;
leaks .............................................................................................................x
Stage III corrosion on internal surfaces...............................................................
x
Stage II corrosion on internal surfaces................................................................
x
Fuel system:
Tanks:
Internal surfaces
Stage III corrosion...............................................................................................x
Stage II corrosion; coating peeling or flaking.......................................................
x
External surfaces
Stage IV corrosion ..............................................................................................x
Stage III corrosion...............................................................................................
x
Stage II corrosion................................................................................................
x
Lines, hoses, and
connectors
Cracked or checked; kinked; broken; fungus growth ..........................................x
Filters and sediment bowls
Stage IV corrosion on internal surfaces; cracked
or broken.......................................................................................................x
Stage III corrosion on internal surfaces; element
deteriorated or contaminated ........................................................................
x
Stage II corrosion on internal surfaces................................................................
x
Carburetors
Stage III corrosion; cracked or broken ................................................................x
Stage II corrosion; contaminated ..................................................................
x
Seals
Deteriorated; leaks or seeps ...............................................................................x
Engine primers
Stage III corrosion on interior surfaces; handle
broken or frozen; lines kinked or broken .......................................................x
Stage II corrosion on interior surfaces ................................................................
x
Exhaust system:
Rain cap
Stage IV corrosion; cracked, broken, or missing.................................................x
Stage III corrosion...............................................................................................
x
Stage II corrosion................................................................................................
x
Brackets and hangers
Stage IV corrosion; cracked or broken................................................................x
Stage III corrosion...............................................................................................
x
Stage II corrosion................................................................................................
x
Intake and exhaust mani-
folds, muffler and pipes.
Stage IV corrosion; punctured ............................................................................x
Stage III corrosion...............................................................................................
x
Stage II corrosion................................................................................................
x
ELECTRICAL SYSTEM:
Wiring
Broken strands; cracked insulation; fungus growth ............................................x
Frayed; checked; loss of flexibility.......................................................................
x
Terminals and connections
Stage III corrosion; broken terminals...................................................................x
Stage II corrosion................................................................................................
x
Spark plugs
Stage III corrosion on spark point end; ceramic
insulator broken ............................................................................................
x
Stage II corrosion on spark point end..................................................................
x
Switches, regulators, relays,
magnetos and controllers
Stage III corrosion; broken; frozen ......................................................................x
Stage II corrosion................................................................................................
x
Generator assemblies, elec-
tric motors and starters
Stage III corrosions; frozen .................................................................................x
Stage II corrosion................................................................................................
x
Lights and reflectors
Stage III corrosion; cracked or broken ................................................................
x
Stage II corrosion................................................................................................
x
III-JJ-1
